US9578719B2 - Method and device for correcting color shift of organic light-emitting diode (OLED) display panel, and display device - Google Patents

Method and device for correcting color shift of organic light-emitting diode (OLED) display panel, and display device Download PDF

Info

Publication number
US9578719B2
US9578719B2 US14/894,453 US201514894453A US9578719B2 US 9578719 B2 US9578719 B2 US 9578719B2 US 201514894453 A US201514894453 A US 201514894453A US 9578719 B2 US9578719 B2 US 9578719B2
Authority
US
United States
Prior art keywords
luminescent devices
monochromatic
monochromatic luminescent
ageing treatment
display panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US14/894,453
Other languages
English (en)
Other versions
US20160366747A1 (en
Inventor
Yuebai HAN
Weilin LAI
Xinxin JIN
Minghua XUAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd filed Critical BOE Technology Group Co Ltd
Assigned to ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD. reassignment ORDOS YUANSHENG OPTOELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAN, Yuebai
Assigned to BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD. reassignment BOE TECHNOLOGY GROUP CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAI, Weilin
Assigned to BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD. reassignment BOE TECHNOLOGY GROUP CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JIN, Xinxin
Assigned to ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD. reassignment ORDOS YUANSHENG OPTOELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: XUAN, MINGHUA
Publication of US20160366747A1 publication Critical patent/US20160366747A1/en
Application granted granted Critical
Publication of US9578719B2 publication Critical patent/US9578719B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Definitions

  • Embodiments of the present invention relate to a method and device for correcting a color shift of an organic light-emitting diode (OLED) display panel, and a display device.
  • OLED organic light-emitting diode
  • OLED has been widely applied in displays due to the characteristics of self-luminescence, high brightness, wide viewing angle, rapid response, the capability of forming red, green and blue (RGB) full-color components, etc.
  • RGB red, green and blue
  • the currently common full-color technology includes fine-metal-mask (FMM) vacuum vaporization method, white+color filter (W+CF) method, blue+color conversion (Blue+CCM) method, etc.
  • FMM is the mainstream technology of the current small and medium size OLED display products.
  • the OLED display product has a relatively serious problem: the lifetime of organic materials of an emission layer (EML) in an OLED device is different along with the degree of attenuation of time, and hence images displayed by the display will have the problem of color shift.
  • EML emission layer
  • OLED display products manufactured by the FMM method are particularly more obvious, and the lifetime attenuation of RGB organic materials of the OLED display product is different.
  • the attenuation rate of blue (B) organic materials is the rapidest (LT(R) ⁇ LT(G)>>LT(B)).
  • the lifetime attenuation of B organic materials is relatively rapid and the lifetime attenuation of red (R) organic materials is relatively slow. Therefore, in images displayed by the OLED display product after long-term use, the brightness of B is lower and the brightness of R is higher, and hence the color shift phenomenon tends to occur.
  • the color of the images displayed by the OLED display product will shift along the direction represented by an arrow.
  • the brightness of the OLED device is quickly reduced in the early stage service. As illustrated in FIG.
  • the attenuation of the brightness of RGB luminescent devices will be more and more moderate, but the attenuation of the brightness of the RGB luminescent devices in the early stage service is relatively rapid and nonuniform. In this case, the images displayed by the OLED display product tend to encounter afterimage problems.
  • the embodiment of the present invention provides a method for correcting a color shift of an OLED display panel, which comprises: performing ageing treatment on monochromatic luminescent devices in the OLED display panel; performing a luminescent lifetime attenuation test on monochromatic luminescent devices after the ageing treatment respectively, and obtaining corresponding luminescent lifetime attenuation rates of the monochromatic luminescent devices; and performing an ageing treatment on the monochromatic luminescent device with rapidest luminescent lifetime attenuation rate again when differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are greater than a preset threshold, until the differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are less than the preset threshold.
  • the step of performing an ageing treatment on the monochromatic luminescent devices in the OLED display panel includes: inputting a different preset voltage into monochromatic luminescent devices in the OLED display panel respectively, and allowing the monochromatic luminescent devices to emit light for a preset duration and subsequently be cooled to room temperature, in which the preset voltage is determined by materials of emitting layers of the monochromatic luminescent devices.
  • the step of performing a luminescent lifetime attenuation test on monochromatic luminescent devices after the ageing treatment respectively includes: inputting voltage for luminescent lifetime attenuation tests into the monochromatic luminescent devices after the ageing treatment in sequence, allowing the monochromatic luminescent devices to emit light for preset duration, and obtaining a corresponding luminescent lifetime attenuation curve of the monochromatic luminescent devices.
  • the preset voltage inputted in the process of performing the ageing treatment on monochromatic luminescent devices in the OLED display panel is greater than the voltage inputted in the process of performing a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment.
  • a difference between a cathode voltage and an anode voltage loaded to the monochromatic luminescent devices in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel is greater than a difference between a cathode voltage and an anode voltage loaded to the monochromatic luminescent devices in the process of performing a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment.
  • the cathode voltages loaded to the monochromatic luminescent devices are the same and the anode voltages loaded to the monochromatic luminescent devices are the same.
  • the preset duration of the light emitting of the monochromatic luminescent devices are the same.
  • the embodiment of the present invention further provides a device for correcting a color shift of an OLED display panel, which comprises: an ageing treatment unit, a test unit and a processing unit, in which the ageing treatment unit is configured to perform ageing treatments on monochromatic luminescent devices in the OLED display panel; the test unit is configured to perform a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment, and obtain corresponding luminescent lifetime attenuation rates of the monochromatic luminescent devices; and the processing unit is configured to perform an ageing treatment on the monochromatic luminescent devices with rapidest luminescent lifetime attenuation rate again when differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are greater than a preset threshold, until the differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are less than the preset threshold.
  • the ageing treatment unit is configured to input a different preset voltage into the monochromatic luminescent devices in the OLED display panel respectively, and allow the monochromatic luminescent devices to emit light for a preset duration and subsequently be cooled to room temperature, in which the preset voltage is determined by materials of emitting layers of the monochromatic luminescent devices.
  • the test unit is configured to input voltage for luminescent lifetime attenuation tests into the monochromatic luminescent devices after the ageing treatment in sequence, allow the monochromatic luminescent devices to emit light for a preset duration, and obtain a corresponding luminescent lifetime attenuation curve of the monochromatic luminescent devices.
  • the ageing treatment unit is configured as: the preset voltage inputted in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel is greater than the voltage inputted in the process of performing a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment.
  • the ageing treatment unit is configured as: differences between cathode voltages and anode voltages loaded to the monochromatic luminescent devices in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel are greater than differences between cathode voltages and anode voltages loaded to the monochromatic luminescent devices in the process of performing a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment.
  • the cathode voltages loaded to the monochromatic luminescent devices are the same and the anode voltages loaded to the monochromatic luminescent devices are the same.
  • the preset duration of light emitting of the monochromatic luminescent devices are the same.
  • the embodiment of the present invention further provides an OLED display device, which comprises the OLED display panel processed by the above method.
  • FIG. 1 is a schematic diagram illustrating the attenuation of the brightness of the three primary colors (red, green and blue, RGB) in the prior art;
  • FIG. 2 is a schematic diagram illustrating a color shift of a display image of an OLED display product in the prior art
  • FIG. 3 is a flowchart illustrating the process of performing the ageing treatment on an OLED display panel in one embodiment of the present invention
  • FIG. 4 is a schematic diagram illustrating the attenuation of the brightness of the three primary colors (red, green and blue, RGB) after the ageing treatments of the OLED display panel in one embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a device for correcting a color shift of an OLED display panel, provided by one embodiment of the present invention.
  • the inventors have noted that the problem to be solved by those skilled in the art is how to solve the problems of afterimage in the early stage service and color shift of display images after long-term use of OLED display products.
  • the embodiment of the present invention provides a method for correcting a color shift of an OLED display panel, which, as illustrated in FIG. 3 , may specifically comprise the following steps:
  • step S 103 determining whether differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are greater than a preset threshold, executing step S 104 if so, and ending the process if not;
  • S 104 performing an ageing treatment on the monochromatic luminescent devices with rapidest luminescent lifetime attenuation rate again when differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are greater than the preset threshold, until differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are less than the preset threshold.
  • the monochromatic luminescent devices in the OLED display panel are subjected to ageing treatments; luminescent lifetime attenuation tests are performed on the monochromatic luminescent devices after the ageing treatments respectively, and corresponding luminescent lifetime attenuation rates of the monochromatic luminescent devices are obtained; and the monochromatic luminescent device with rapidest luminescent lifetime attenuation rate is subjected to ageing treatments again when differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are greater than the preset threshold, until differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are less than the preset threshold.
  • the OLED display panel processed by the processing method As the early stage service life of the monochromatic luminescent devices is rapidly consumed, the problem of afterimage of the OLED display panel in the early stage service is solved. Meanwhile, the lifetime attenuation rates of the processed monochromatic luminescent devices are moderate and become consistent. Therefore, as the relative brightness of the monochromatic luminescent devices become consistent along with the rise of the use time, the color shift phenomenon of display images of the OLED display product after long-term use can be effectively avoided.
  • the method for correcting a color shift of the OLED display panel provided by the embodiment of the present invention can be applied in full-color OLED display panels comprising monochromatic luminescent devices of various colors. No limitation will be given to the color of the monochromatic luminescent devices. For the convenience of description, description is given in the following embodiments by taking the case that the OLED display panel only comprises monochromatic luminescent devices of red, green and blue (RGB) colors as an example.
  • RGB red, green and blue
  • the method for correcting a color shift of the OLED display panel is adopted to process the OLED display panel.
  • the lifetime attenuation rates of the RGB monochromatic luminescent devices are shown in FIG. 4 . It can be seen from FIG. 4 that: in the OLED display panel after the ageing treatment, the luminescent lifetime attenuation rates of the RGB luminescent devices become consistent. Therefore, the relative brightness of the monochromatic luminescent devices becomes consistent along with the rise of the use time, so that the color shift phenomenon of display images of the OLED display product after long-term use can be avoided, and hence the quality of images displayed by the display panel can be guaranteed.
  • the implementation of the step S 101 may, for instance, includes the following steps: inputting different preset voltages into the monochromatic luminescent devices in the OLED display panel respectively via the ageing treatment unit, and allowing the monochromatic luminescent devices to emit light for a preset duration and subsequently be cooled to room temperature.
  • the preset voltage may control the current flowing across the monochromatic luminescent devices and hence control the luminous intensity of the monochromatic luminescent devices.
  • the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel may be achieved by means of performing the ageing treatment on all the monochromatic luminescent devices at the same time or may also be achieved by means of performing the ageing treatment on each luminescent device of various colors in sequence. No limitation will be given here.
  • the preset voltage for driving the monochromatic luminescent devices to emit light and heat is also different.
  • the case that the driving voltage of the monochromatic luminescent devices is different from each other in the case of same relative brightness may be determined according to IVL performance curve data of the monochromatic luminescent devices, measured before ageing treatment.
  • appropriate input voltage in the process of ageing treatment may be selected for the monochromatic luminescent devices by the comparison of the IVL performance curves of the monochromatic luminescent devices before and after the ageing treatment, so as to ensure that the attenuation of the relative brightness of the monochromatic luminescent devices after the ageing treatment is not too rapid.
  • the preset voltage of R luminescent devices may be 7.25V
  • the preset voltage of green (G) luminescent devices may be 8.5V
  • the preset voltage of B luminescent devices may be 7.5V. That is to say, the preset voltages for the ageing treatment of the monochromatic luminescent devices are different.
  • the preset voltages for the ageing treatment of the monochromatic luminescent devices may be determined by the materials of the emitting layers of the monochromatic luminescent devices.
  • preset voltages for driving the monochromatic luminescent devices to emit light and heat must be inputted into corresponding luminescent devices of different colors respectively, so that high current, which may reach 100 mA-600 mA, is produced in the monochromatic luminescent devices of the OLED display panel. Therefore, the monochromatic luminescent devices are driven to emit light and heat for a preset duration, and hence the current ageing of the monochromatic luminescent devices can be achieved.
  • the monochromatic luminescent devices subjected to ageing treatments are driven to emit light and heat by high current, the monochromatic luminescent devices subjected to current ageing must be naturally cooled to room temperature, so as to avoid the influence on the subsequent luminescent lifetime attenuation test performed on the monochromatic devices subjected to ageing treatment.
  • the preset duration of the light emitting of the monochromatic luminescent devices may be same or may also be different. No limitation will be given here.
  • the preset duration of the light emitting of the monochromatic luminescent devices may be set to be same.
  • the preset duration thereof may, for instance, be set to about 30 min.
  • the monochromatic luminescent devices in the OLED display panel are controlled to be subjected to ageing treatments at the same time, so that the rapid ageing of the OLED display panel can be conveniently achieved.
  • the implementation of the step S 102 may be implemented by, for instance, the following implementation: inputting voltage for luminescent lifetime attenuation tests into the monochromatic luminescent devices after the ageing treatment in sequence, allowing the monochromatic luminescent devices to emit light for a preset duration, and obtaining a corresponding luminescent lifetime attenuation curve of the monochromatic luminescent devices.
  • voltage for driving the monochromatic luminescent devices to emit light is inputted and is generally 0-4V; luminescent lifetime attenuation tests are performed on the monochromatic luminescent devices in the OLED display panel in sequence via corresponding luminescent lifetime attenuation test equipment in the environment of constant temperature and humidity; the test duration is, for instance, generally at least 240 hours; and finally, the luminescent lifetime attenuation curves of the monochromatic luminescent devices after the ageing treatment are obtained and provide a more intuitive determining condition for determining whether the luminescent lifetime attenuation rates of the monochromatic luminescent devices in the OLED display panel after the ageing treatment become consistent.
  • the lifetime attenuation and the brightness attenuation of the monochromatic luminescent devices in the OLED display product in the early stage service are relatively rapid.
  • the attenuation rate is slower along with the rise of the use time.
  • the monochromatic luminescent devices in the OLED display panel are subjected to rapid ageing treatment to obtain the OLED display panel in which the attenuation rates of the monochromatic luminescent devices in the OLED display panel in the later use are reduced and become consistent.
  • the voltage higher than the normal emission driving voltage of the OLED display panel may be inputted, so that high current is produced in the monochromatic luminescent devices of the OLED display panel, and hence the monochromatic luminescent devices are driven to emit light and heat.
  • the inputted voltage is the voltage for driving the monochromatic luminescent devices to normally emit light. Therefore, the preset voltage inputted in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel is greater than the voltage inputted in the process of performing a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment.
  • differences between cathode voltages and anode voltages loaded to the monochromatic luminescent devices in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel may be greater than differences between cathode voltages and anode voltages loaded to the monochromatic luminescent devices in the process of driving the monochromatic luminescent devices to normally emit light.
  • the monochromatic luminescent devices of the OLED display panel so that the monochromatic luminescent devices are driven to emit light and heat, and hence the early stage service life of the monochromatic luminescent devices can be rapidly consumed.
  • the lifetime attenuation rate of the monochromatic luminescent devices under normal luminescent state must be tested, and hence the difference between the cathode voltage and the anode voltage loaded to the monochromatic luminescent devices is the difference between the cathode voltage and the anode voltage loaded to the monochromatic luminescent devices in the process of driving the monochromatic luminescent devices to normally emit light.
  • differences between cathode voltages and anode voltages loaded to the monochromatic luminescent devices in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel are greater than differences between cathode voltages and anode voltages loaded to the monochromatic luminescent devices in the process of performing luminescent lifetime attenuation tests on the monochromatic luminescent devices after the ageing treatment.
  • the cathode voltages loaded to the monochromatic luminescent devices are the same and the anode voltages loaded to the monochromatic luminescent devices are the same.
  • a voltage is loaded to cathodes and anodes of the monochromatic luminescent devices, so that high current is produced in the monochromatic luminescent devices, and hence the rapid current ageing of the monochromatic luminescent devices can be achieved.
  • the monochromatic luminescent devices in the OLED display panel can be conveniently controlled to be processed at the same time, and hence the rapid ageing of the OLED display panel can be conveniently achieved.
  • the blue (B) monochromatic luminescent devices are subjected to ageing treatments again when the luminescent lifetime attenuation rate of the red (R) monochromatic luminescent devices is determined to be the lowest, the difference between the luminescent lifetime attenuation rate of the red (R) monochromatic luminescent devices and the luminescent lifetime attenuation rate of the blue (B) monochromatic luminescent devices being greater than the preset threshold, the difference between the luminescent lifetime attenuation rate of the red (R) monochromatic luminescent devices and the luminescent lifetime attenuation rate of the green (G) monochromatic luminescent devices being less than the preset threshold.
  • the OLED display panel in which the luminescent lifetime attenuation of the monochromatic luminescent devices is determined to become consistent when the difference between the luminescent lifetime attenuation rate of the blue (B) monochromatic luminescent devices after second ageing treatment and the luminescent lifetime attenuation rate of the red (R) monochromatic luminescent devices is determined to be less than the preset threshold, can be finally obtained.
  • the embodiment of the present invention further provides a device for correcting a color shift of an OLED display panel.
  • the device may comprise: an ageing treatment unit 01 , a test unit 02 and a processing unit 03 .
  • the ageing treatment unit 01 is configured to perform an ageing treatment on the monochromatic luminescent devices in the OLED display panel.
  • the ageing treatment unit 01 includes a loading platform, a driving chip, a plurality of pressure terminals, a power supply, etc.
  • the driving chip is connected with the power supply.
  • the pressure terminals are connected with the driving chip and correspond to driving voltage input ends of the OLED display panel to be tested.
  • Driving signals may be applied to the driving chip, so that a preset voltage is outputted to the pressure terminals and hence applied to the monochromatic luminescent devices of the OLED display panel to be tested.
  • the test unit 02 is configured to perform a luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment respectively and obtain corresponding luminescent lifetime attenuation rates of the monochromatic luminescent devices.
  • the test unit 02 includes an optical detection apparatus (e.g., a camera) so as to acquire the brightness of the monochromatic luminescent devices, and may also include a memory and/or a computing device (e.g., a central processing unit (CPU)) so as to store and/or compare and calculate the variation of the brightness respectively.
  • an optical detection apparatus e.g., a camera
  • a computing device e.g., a central processing unit (CPU)
  • the processing unit 03 is configured to perform ageing treatments on the monochromatic luminescent device with rapidest luminescent lifetime attenuation rate again when the difference between the luminescent lifetime attenuation rates of the monochromatic luminescent devices is greater than a preset threshold, until the difference between the luminescent lifetime attenuation rates of the monochromatic luminescent devices is less than the preset threshold.
  • the processing unit 03 for instance, includes a loading platform, a driving chip, a plurality of pressure terminals, a power supply, etc.
  • the structure of the processing unit 03 may be the same with that of the ageing treatment unit 01 , but the voltage applied in the process of operation is different.
  • the monochromatic luminescent devices in the OLED display panel are subjected to ageing treatments via the ageing treatment unit 01 ; luminescent lifetime attenuation tests are performed on the monochromatic luminescent devices after the ageing treatment respectively via the test unit 02 , and corresponding luminescent lifetime attenuation rates of the monochromatic luminescent devices are obtained; and the monochromatic luminescent devices with rapidest luminescent lifetime attenuation rate are subjected to ageing treatment again via the processing unit 03 when the differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are determined to be greater than the preset threshold, until the differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are less than the preset threshold.
  • the early stage service life of the monochromatic luminescent devices is rapidly consumed, so that the problem of afterimage of the OLED display panel in the early stage service can be solved.
  • the lifetime attenuation rates of the processed monochromatic luminescent devices are moderate and become consistent. Therefore, when the OLED display panel is applied in corresponding OLED display product, as the lifetime attenuation rates of the monochromatic luminescent devices become consistent, the relative brightness of the monochromatic luminescent devices becomes consistent along with the rise of the use time, and hence the color shift phenomenon of display images of the OLED display product after long-term use can be effectively avoided.
  • the ageing treatment unit 01 is configured to input different preset voltages into the monochromatic luminescent devices in the OLED display panel respectively, and allow the monochromatic luminescent devices to emit light for a preset duration and subsequently be cooled to room temperature.
  • the preset voltage is determined by materials of emitting layers of the monochromatic luminescent devices. That is to say, the preset voltage for the ageing treatment of the monochromatic luminescent devices is determined by the materials of the emitting layers of the monochromatic luminescent devices; corresponding preset voltage is inputted; and the monochromatic luminescent devices in the OLED display panel are subjected to ageing treatment via the ageing treatment unit 01 .
  • the test unit 02 is configured to input voltage for luminescent lifetime attenuation tests into the monochromatic luminescent devices after the ageing treatment in sequence, allow the monochromatic luminescent devices to emit light for a preset duration, and obtain a corresponding luminescent lifetime attenuation curve of the monochromatic luminescent devices.
  • the process of performing a luminescent lifetime attenuation test on the monochromatic luminescent devices via the test unit 02 in sequence and obtaining the luminescent lifetime attenuation rate of the monochromatic luminescent devices provides a determinant condition for determining whether the luminescent lifetime attenuation of the monochromatic luminescent devices in the OLED display panel after the ageing treatment become consistent.
  • the preset voltage inputted in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel via the ageing treatment unit 01 is greater than the voltage inputted in the process of performing luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment via the test unit 02 .
  • high current higher than the current for driving the monochromatic luminescent devices to normally emit light may be produced in the monochromatic luminescent devices, so that the monochromatic luminescent devices are driven to emit light and heat. Therefore, the lifetime of the monochromatic luminescent devices can be rapidly consumed, and hence the rapid ageing treatment of the monochromatic luminescent devices can be achieved.
  • a difference between a cathode voltage and an anode voltage loaded to the monochromatic luminescent devices by the ageing treatment unit 01 in the process of performing the ageing treatment on the monochromatic luminescent devices in the OLED display panel is greater than a difference between a cathode voltage and an anode voltage loaded to the monochromatic luminescent devices by the test unit 02 in the process of performing luminescent lifetime attenuation test on the monochromatic luminescent devices after the ageing treatment.
  • the cathode voltage loaded to the monochromatic luminescent devices by the ageing treatment unit 01 is same and the anode voltage loaded to the monochromatic luminescent devices is same.
  • voltage is loaded to cathodes and anodes of the monochromatic luminescent devices, so that high current is produced in the monochromatic luminescent devices, and hence the rapid current ageing of the monochromatic luminescent devices can be achieved.
  • the ageing treatment of the monochromatic luminescent devices in the OLED display panel can be conveniently achieved at the same time, and hence the rapid ageing treatment of the OLED display panel can be achieved.
  • the preset duration of the light emitting of the monochromatic luminescent devices may be set to be same, so that the ageing treatment can be conveniently performed on the monochromatic luminescent devices in the OLED display panel at the same time, and hence the rapid ageing treatment of the OLED display panel can be achieved.
  • the embodiment of the present invention provides an OLED display device, which comprises the OLED display panel processed by the method for correcting the color shift of the OLED display panel, provided by the embodiment of the present invention.
  • the display device may be applied in any product or component with display function such as a mobile phone, a tablet PC, a TV, a display, a notebook computer, a digital picture frame and a navigator.
  • the embodiments of the display device may refer to the embodiments of the OLED display panel processed by the method for correcting the color shift of the OLED display panel, provided by the embodiment of the present invention. No further description will be given here.
  • the monochromatic luminescent devices in the OLED display panel are subjected to ageing treatment; luminescent lifetime attenuation test is performed on the monochromatic luminescent devices after the ageing treatment respectively, and corresponding luminescent lifetime attenuation rates of the monochromatic luminescent devices are obtained; and the monochromatic luminescent devices with rapidest luminescent lifetime attenuation rate are subjected to ageing treatment again when the differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are greater than the preset threshold, until the differences between the luminescent lifetime attenuation rates of the monochromatic luminescent devices are less than the preset threshold.
  • the OLED display panel processed by the processing method As the early stage service life of the monochromatic luminescent devices is rapidly consumed, the problem of afterimage of the OLED display panel in the early stage service is solved. Meanwhile, the lifetime attenuation rate of the processed monochromatic luminescent devices is moderate and becomes consistent. Therefore, when the OLED display panel is applied in corresponding OLED display product, as the lifetime attenuation rate of the monochromatic luminescent devices becomes consistent, the relative brightness of the monochromatic luminescent devices becomes consistent along with the rise of the use time, and hence the color shift phenomenon of display images of the OLED display product after long-term use can be effectively avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
US14/894,453 2015-01-15 2015-07-16 Method and device for correcting color shift of organic light-emitting diode (OLED) display panel, and display device Active US9578719B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201510020929 2015-01-15
CN201510020929.5 2015-01-15
CN201510020929.5A CN104505029B (zh) 2015-01-15 2015-01-15 一种改善oled显示面板色偏的方法、装置及显示装置
PCT/CN2015/084175 WO2016112668A1 (fr) 2015-01-15 2015-07-16 Procédé et dispositif de correction d'erreur de teinte de panneau d'affichage à delo et dispositif d'affichage

Publications (2)

Publication Number Publication Date
US20160366747A1 US20160366747A1 (en) 2016-12-15
US9578719B2 true US9578719B2 (en) 2017-02-21

Family

ID=52946696

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/894,453 Active US9578719B2 (en) 2015-01-15 2015-07-16 Method and device for correcting color shift of organic light-emitting diode (OLED) display panel, and display device

Country Status (4)

Country Link
US (1) US9578719B2 (fr)
EP (1) EP3246908B1 (fr)
CN (1) CN104505029B (fr)
WO (1) WO2016112668A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170328960A1 (en) * 2016-05-13 2017-11-16 Koito Manufacturing Co., Ltd. Vehicle lamp and method for inspecting organic el element
US11004378B2 (en) 2018-06-25 2021-05-11 International Business Machines Corporation Color shift correction for a display panel

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104505029B (zh) * 2015-01-15 2016-11-30 京东方科技集团股份有限公司 一种改善oled显示面板色偏的方法、装置及显示装置
CN105629378B (zh) 2016-01-04 2018-03-16 京东方科技集团股份有限公司 显示基板以及显示装置
CN105788527B (zh) * 2016-03-31 2018-03-27 广东欧珀移动通信有限公司 一种像素调用方法及装置
CN107393481B (zh) * 2017-08-23 2019-12-06 京东方科技集团股份有限公司 有机发光二极管oled的寿命老化方法和系统
CN108182900B (zh) * 2018-01-29 2021-08-03 上海天马有机发光显示技术有限公司 一种显示面板老化处理装置和显示面板老化处理方法
CN108470753B (zh) 2018-03-28 2021-02-26 京东方科技集团股份有限公司 一种电致发光显示面板、其制作方法及显示装置
CN111477167A (zh) * 2019-01-23 2020-07-31 北京小米移动软件有限公司 校正显示亮度的方法、装置及存储介质
CN109949727B (zh) * 2019-04-12 2022-12-20 京东方科技集团股份有限公司 用于显示面板的老化方法及老化装置
CN110428762B (zh) * 2019-07-10 2023-05-16 武汉精立电子技术有限公司 基于像素点亮度的oled面板老化测试发光特性检测方法
CN110634444B (zh) * 2019-09-24 2021-02-02 昆山国显光电有限公司 一种显示面板的补偿方法
CN110599910B (zh) * 2019-09-27 2022-04-29 京东方科技集团股份有限公司 显示面板及其制作方法、显示装置
CN111740034B (zh) * 2020-06-30 2024-03-08 武汉天马微电子有限公司 用于有机发光显示面板的老化方法及装置
CN112863439B (zh) 2021-01-21 2022-06-28 京东方科技集团股份有限公司 一种改善oled残像的方法、装置、显示装置及介质

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050184937A1 (en) * 2004-02-20 2005-08-25 I-Shu Lee [active matrix oled driving control circuit capable of dynamically adjusting white balance and adjusting method thereof]
US20070221867A1 (en) * 2006-03-24 2007-09-27 Goldeneye, Inc. Wavelength conversion chip for use in solid-state lighting and method for making same
US20080048951A1 (en) 2006-04-13 2008-02-28 Naugler Walter E Jr Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display
US20080057818A1 (en) * 2006-09-04 2008-03-06 Sanyo Electric Co., Ltd. Method of inspecting defect for electroluminescence display apparatus, method of repairing detect for electroluminescence display apparatus, and method of manufacturing electroluminescence display apparatus
CN101452668A (zh) 2007-12-05 2009-06-10 三星移动显示器株式会社 有机发光显示器及其驱动方法
US20130002960A1 (en) 2011-06-28 2013-01-03 Jae-Woo Ryu Signal Controller For Display Device, Display Device, And Driving Method Thereof
CN103886829A (zh) 2012-12-21 2014-06-25 乐金显示有限公司 有机发光显示装置及其驱动方法
CN104505029A (zh) 2015-01-15 2015-04-08 京东方科技集团股份有限公司 一种改善oled显示面板色偏的方法、装置及显示装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0942313B1 (fr) * 1997-05-07 2004-01-21 Seiko Epson Corporation Element d'affichage et montre electronique
JP3433406B2 (ja) * 1999-10-18 2003-08-04 インターナショナル・ビジネス・マシーンズ・コーポレーション ホワイトポイント調整方法、カラー画像処理方法、ホワイトポイント調整装置、および液晶表示装置
JP2001356981A (ja) * 2000-06-14 2001-12-26 Current Inc メール広告装置及びメール広告方法
JP3489676B2 (ja) * 2000-10-16 2004-01-26 日本電気株式会社 画像表示装置およびその駆動方法
JP2004167899A (ja) * 2002-11-21 2004-06-17 Fuji Photo Film Co Ltd 露光装置
JP2005037783A (ja) * 2003-07-17 2005-02-10 Matsushita Electric Ind Co Ltd モノクロモード付フルカラーｅｌディスプレイ制御装置、それを搭載するフルカラーｅｌディスプレイ、及びその色ずれ抑制方法
JP4534548B2 (ja) * 2004-03-26 2010-09-01 ソニー株式会社 焼き付き補正装置、表示装置、画像処理装置、プログラム及び記録媒体
JP5020484B2 (ja) * 2005-07-12 2012-09-05 東北パイオニア株式会社 自発光表示装置及びその駆動方法
GB2441354B (en) * 2006-08-31 2009-07-29 Cambridge Display Tech Ltd Display drive systems
US7847764B2 (en) * 2007-03-15 2010-12-07 Global Oled Technology Llc LED device compensation method
US7859501B2 (en) * 2007-06-22 2010-12-28 Global Oled Technology Llc OLED display with aging and efficiency compensation
US8471787B2 (en) * 2007-08-24 2013-06-25 Canon Kabushiki Kaisha Display method of emission display apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050184937A1 (en) * 2004-02-20 2005-08-25 I-Shu Lee [active matrix oled driving control circuit capable of dynamically adjusting white balance and adjusting method thereof]
US20070221867A1 (en) * 2006-03-24 2007-09-27 Goldeneye, Inc. Wavelength conversion chip for use in solid-state lighting and method for making same
US20080048951A1 (en) 2006-04-13 2008-02-28 Naugler Walter E Jr Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display
US20080057818A1 (en) * 2006-09-04 2008-03-06 Sanyo Electric Co., Ltd. Method of inspecting defect for electroluminescence display apparatus, method of repairing detect for electroluminescence display apparatus, and method of manufacturing electroluminescence display apparatus
CN101452668A (zh) 2007-12-05 2009-06-10 三星移动显示器株式会社 有机发光显示器及其驱动方法
US20130002960A1 (en) 2011-06-28 2013-01-03 Jae-Woo Ryu Signal Controller For Display Device, Display Device, And Driving Method Thereof
CN103886829A (zh) 2012-12-21 2014-06-25 乐金显示有限公司 有机发光显示装置及其驱动方法
CN104505029A (zh) 2015-01-15 2015-04-08 京东方科技集团股份有限公司 一种改善oled显示面板色偏的方法、装置及显示装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
English machine translation of CN101452668A. *
English machine translation of CN103886829A. *
English machine translation of CN104505029A. *
International Search Report and Written Opinion both dated Sep. 23, 2015; PCT/CN2015/084175.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170328960A1 (en) * 2016-05-13 2017-11-16 Koito Manufacturing Co., Ltd. Vehicle lamp and method for inspecting organic el element
US10120038B2 (en) * 2016-05-13 2018-11-06 Koito Manufacturing Co., Ltd. Vehicle lamp and method for inspecting organic EL element
US11004378B2 (en) 2018-06-25 2021-05-11 International Business Machines Corporation Color shift correction for a display panel

Also Published As

Publication number Publication date
CN104505029A (zh) 2015-04-08
EP3246908A4 (fr) 2018-08-29
CN104505029B (zh) 2016-11-30
EP3246908A1 (fr) 2017-11-22
EP3246908B1 (fr) 2019-10-02
WO2016112668A1 (fr) 2016-07-21
US20160366747A1 (en) 2016-12-15

Similar Documents

Publication Publication Date Title
US9578719B2 (en) Method and device for correcting color shift of organic light-emitting diode (OLED) display panel, and display device
US11244653B2 (en) Driving method and driving device of display panel, and display device
CN106910461B (zh) 一种显示面板、显示装置及显示驱动方法
US9483976B2 (en) Method, apparatus and system for display compensation based on reference luminance values obtained from test pictures
US9830851B2 (en) Wear compensation for a display
CN107424561B (zh) 一种有机发光显示面板、其驱动方法及驱动装置
US9728124B2 (en) Adaptive RGB-to-RGBW conversion for RGBW display systems
WO2018196119A1 (fr) Système de compensation de luminosité et procédé de compensation de luminosité pour appareil d'affichage à oled
KR20180061450A (ko) 유기발광표시장치 및 그의 구동방법
US20190130803A1 (en) Grayscale compensation amount determining method and device, driving method, circuit and display device
US9898967B2 (en) Driving voltage control method and apparatus,array substrate, and display device
CN104021774A (zh) 一种图像处理的方法及装置
US11688340B2 (en) Gamma debugging method and apparatus
US20160351101A1 (en) Organic light emitting display device and driving method thereof
US20200105192A1 (en) Pixel of organic light emitting display device and organic light emitting display device having the same
JPWO2019054178A1 (ja) 表示装置、及び信号処理装置
US11004386B2 (en) Methods for calibrating correlation between voltage and grayscale value of display panels
US20140313244A1 (en) Method of displaying image of display panel
US20160253941A1 (en) Display panel and driving method thereof and display device
US10078982B2 (en) Apparatus and method of determining driving voltage
US11908400B2 (en) Display system using system level resources to calculate compensation parameters for a display module in a portable device
US20210090500A1 (en) Driving method of active matrix organic light-emitting diode (amoled) display panel and display device
US8446105B2 (en) Display apparatus
KR20140054719A (ko) 유기발광표시장치의 색편차 보정정보 생성장치 및 방법
WO2020132807A1 (fr) Panneau d'affichage, procédé de préparation associé, et appareil d'affichage

Legal Events

Date Code Title Description
AS Assignment

Owner name: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAI, WEILIN;REEL/FRAME:037150/0024

Effective date: 20151110

Owner name: BOE TECHNOLOGY GROUP CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAI, WEILIN;REEL/FRAME:037150/0024

Effective date: 20151110

Owner name: BOE TECHNOLOGY GROUP CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAN, YUEBAI;REEL/FRAME:037150/0017

Effective date: 20151109

Owner name: BOE TECHNOLOGY GROUP CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:XUAN, MINGHUA;REEL/FRAME:037150/0037

Effective date: 20151109

Owner name: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAN, YUEBAI;REEL/FRAME:037150/0017

Effective date: 20151109

Owner name: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JIN, XINXIN;REEL/FRAME:037150/0028

Effective date: 20151109

Owner name: BOE TECHNOLOGY GROUP CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JIN, XINXIN;REEL/FRAME:037150/0028

Effective date: 20151109

Owner name: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:XUAN, MINGHUA;REEL/FRAME:037150/0037

Effective date: 20151109

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4